Photographing lens assembly, image capturing unit and electronic device

ABSTRACT

A photographing lens assembly includes five lens elements, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has an object-side surface being concave in a paraxial region. The third lens element has an object-side surface being convex in a paraxial region. The fourth lens element has an object-side surface being concave in a paraxial region, wherein two surfaces thereof are both aspheric. The fifth lens element has an object-side surface and an image-side surface being both aspheric. At least one surface of the lens elements has at least one inflection point.

RELATED APPLICATIONS

This application is a continuation patent application of U.S.application Ser. No. 15/459,576, filed Mar. 15, 2017, which claimspriority to Taiwan Application 105138726, filed Nov. 24, 2016, which isincorporated by reference herein in its entirety.

BACKGROUND Technical Field

The present disclosure relates to a photographing lens assembly, animage capturing unit and an electronic device, more particularly to aphotographing lens assembly and an image capturing unit applicable to anelectronic device.

Description of Related Art

In recent years, with the popularity of electronic devices having camerafunctionalities, the demand of miniaturized optical systems has beenincreasing. As the advanced semiconductor manufacturing technologieshave reduced the pixel size of sensors, and compact optical systems havegradually evolved toward the field of higher megapixels, there is anincreasing demand for compact optical systems featuring better imagequality.

In order to provide better user experience, the electronic deviceequipped with one or more optical systems has become the mainstreamproduct in the market. For various applications, the optical systems aredeveloped with various optical characteristics, and have been widelyapplied to different kinds of smart electronic devices, such as vehicledevices, image recognition systems, entertainment devices, sport devicesand intelligent home assistance systems, for various requirements.

However, a lens element in a conventional optical system usually hasspherical lens surfaces, such that the size of the conventional opticalsystem is difficult to be reduced. Moreover, the field of view isunfavorable for capturing a detailed image of an object located fromafar. Thus, there is a need to develop an optical system featuringcompact size, telephoto effect and high image quality.

SUMMARY

According to one aspect of the present disclosure, a photographing lensassembly includes five lens elements, the five lens elements being, inorder from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element and afifth lens element. The first lens element with positive refractivepower has an object-side surface being convex in a paraxial regionthereof. The second lens element has an object-side surface beingconcave in a paraxial region thereof. The third lens element has anobject-side surface being convex in a paraxial region thereof. Thefourth lens element has an object-side surface being concave in aparaxial region thereof, wherein the object-side surface and animage-side surface of the fourth lens element are both aspheric. Thefifth lens element has an object-side surface and an image-side surfacebeing both aspheric. At least one surface of the lens elements of thephotographing lens assembly has at least one inflection point. When asum of axial distances between each adjacent lens element of thephotographing lens assembly is ΣAT, a central thickness of the firstlens element is CT1, an axial distance between the image-side surface ofthe fifth lens element and an image surface is BL, an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the fifth lens element is TD, a maximum imageheight of the photographing lens assembly is ImgH, a focal length of thephotographing lens assembly is f, the following conditions aresatisfied:

0<ΣAT/CT1<1.65;

0.65<BL/TD<2.60; and

0.10<ImgH/f<0.50.

According to another aspect of the present disclosure, a photographinglens assembly includes five lens elements, the five lens elements being,in order from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element and afifth lens element. The first lens element with positive refractivepower has an object-side surface being convex in a paraxial regionthereof. The third lens element has an object-side surface being convexin a paraxial region thereof. The fourth lens element has an object-sidesurface and an image-side surface being both aspheric. The fifth lenselement has an object-side surface and an image-side surface being bothaspheric. At least one surface of the lens elements of the photographinglens assembly has at least one inflection point. When a sum of axialdistances between each adjacent lens element of the photographing lensassembly is ΣAT, a central thickness of the first lens element is CT1,an axial distance between the image-side surface of the fifth lenselement and an image surface is BL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the fifth lens element is TD, a maximum image height of thephotographing lens assembly is ImgH, a focal length of the photographinglens assembly is f, a curvature radius of the object-side surface of thefirst lens element is R1, a curvature radius of the object-side surfaceof the fourth lens element is R7, the following conditions aresatisfied:

0<ΣAT/CT1<1.55;

0.70<BL/TD<2.20;

0.10<ImgH/f<0.50; and

−3.0<R1/R7<1.30.

According to still another aspect of the present disclosure, an imagecapturing unit includes the aforementioned imaging optical lensassembly, an optical image stabilizer and an image sensor, wherein theimage sensor is disposed on the image surface of the photographing lensassembly.

According to yet still another aspect of the present disclosure, anelectronic device includes the aforementioned image capturing unit.

According to yet still another aspect of the present disclosure, aphotographing lens assembly includes five lens elements, the five lenselements being, in order from an object side to an image side, a firstlens element, a second lens element, a third lens element, a fourth lenselement and a fifth lens element. The first lens element with positiverefractive power has an object-side surface being convex in a paraxialregion thereof. The second lens element has an object-side surface beingconcave in a paraxial region thereof. The third lens element has anobject-side surface being convex in a paraxial region thereof. Thefourth lens element has an object-side surface being concave in aparaxial region thereof, wherein the object-side surface and animage-side surface of the fourth lens element are both aspheric. Thefifth lens element has an object-side surface and an image-side surfacebeing both aspheric. At least one surface of the lens elements of thephotographing lens assembly has at least one inflection point. When asum of axial distances between each adjacent lens element of thephotographing lens assembly is ΣAT, a central thickness of the firstlens element is CT1, an axial distance between the image-side surface ofthe fifth lens element and an image surface is BL, an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the fifth lens element is TD, a maximum imageheight of the photographing lens assembly is ImgH, a focal length of thephotographing lens assembly is f, a curvature radius of the object-sidesurface of the first lens element is R1, a curvature radius of theobject-side surface of the third lens element is R5, the followingconditions are satisfied:

0<ΣAT/CT1<1.75;

0.65<BL/TD<2.60;

0.10<ImgH/f<0.50; and

0.55<R1/R5<2.0.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 1A is a schematic view of the image capturing unit with anotherconfiguration of prism according to the 1st embodiment of the presentdisclosure;

FIG. 1B is a schematic view of the image capturing unit with stillanother configuration of prism according to the 1st embodiment of thepresent disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 3A is a schematic view of the image capturing unit with anotherconfiguration of prism according to the 2nd embodiment of the presentdisclosure;

FIG. 3B is a schematic view of the image capturing unit with stillanother configuration of prism according to the 2nd embodiment of thepresent disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 9A is a schematic view of the image capturing unit with anotherconfiguration of prism according to the 5th embodiment of the presentdisclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 11A is a schematic view of the image capturing unit with anotherconfiguration of prism according to the 6th embodiment of the presentdisclosure;

FIG. 11B is a schematic view of the image capturing unit with stillanother configuration of prism according to the 6th embodiment of thepresent disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 a schematic view of an image capturing unit according to the 7thembodiment of the present disclosure;

FIG. 13A is a schematic view of the image capturing unit with anotherconfiguration of prism according to the 7th embodiment of the presentdisclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 a schematic view of an image capturing unit according to the 8thembodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 a schematic view of an image capturing unit according to the 9thembodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 9thembodiment;

FIG. 19 a schematic view of an image capturing unit according to the10th embodiment of the present disclosure;

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 10thembodiment;

FIG. 21 is a schematic view of Yc42 according to the 3rd embodiment ofthe present disclosure;

FIG. 22 is a perspective view of an image capturing unit according tothe 11th embodiment of the present disclosure;

FIG. 23 is a schematic view of an electronic device according to the12th embodiment of the present disclosure;

FIG. 24 is a perspective view of the electronic device in FIG. 23; and

FIG. 25 is another perspective view of the electronic device in FIG. 23.

DETAILED DESCRIPTION

A photographing lens assembly includes five lens elements. The five lenselements are, in order from an object side to an image side, a firstlens element, a second lens element, a third lens element, a fourth lenselement and a fifth lens element.

The first lens element with positive refractive power has an object-sidesurface being convex in a paraxial region thereof. Therefore, it isfavorable for providing sufficient light converging capability so as toobtain a telephoto effect; furthermore, it is favorable for reducing atotal track length of the photographing lens assembly so as to obtainbetter lens assembling.

The second lens element can have negative refractive power; therefore,it is favorable for correcting aberrations generated by the first lenselement while correcting axial chromatic aberration, thereby converginglight rays with different wavelengths on the same image surface. Thesecond lens element can have an object-side surface being concave in aparaxial region thereof; therefore, it is favorable for obtaining aproper incident angle of the light at the surfaces of the second lenselement so as to prevent excessive aberrations.

The third lens element can have positive refractive power; therefore, itis favorable for properly distributing the light converging capabilitybetween the first and the third lens elements while moving the principalpoint of the photographing lens assembly toward the image side toprovide sufficient back focal length for a more flexible lens design.The third lens element has an object-side surface being convex in aparaxial region thereof; therefore, it is favorable for a better controlin the traveling direction of light ray to reduce the size of the thirdlens element, thereby reducing the width of the photographing lensassembly. The third lens element can have an image-side surface beingconcave in a paraxial region thereof; therefore, it is favorable forcontrolling the traveling direction of light ray so as to prevent thediameter of the fourth lens element from becoming overly large.

The fourth lens element can have an object-side surface being concave ina paraxial region thereof; therefore, it is favorable for properlyarranging the lens surface curvatures for the photographing lensassembly to maintain in a compact size with a tighter assembly of lenselements. An image-side surface of the fourth lens element can have atleast one concave shape in an off-axial region thereof; therefore, it isfavorable for reducing the effective radius of the surfaces of thefourth lens element so as to keep the photographing lens assemblycompact.

The fifth lens element can have negative refractive power; therefore, itis favorable for correcting the Petzval surface so as to improveperipheral image quality. An object-side surface of the fifth lenselement can have at least one concave shape in an off-axial regionthereof; therefore, it is favorable for receiving light at the off-axialregion to reduce the incident angle, thereby preventing total reflectionat the object-side surface of the fifth lens element so as to eliminatestray light. The fifth lens element can have an image-side surface beingconcave in a paraxial region thereof, and the image-side surface of thefifth lens element can have at least one convex shape in an off-axialregion thereof; therefore, it is favorable for improving the aberrationcorrection at the off-axial region so as to maintain the photographinglens assembly in a compact size; furthermore, it is favorable forcorrecting the off-axial light ray to reduce field curvature and controlthe image height. Thus, the photographing lens assembly can be moreflexible to design.

According to the present disclosure, at least one surface of the lenselements of the photographing lens assembly has at least one inflectionpoint. In detail, among all object-side surfaces and all image-sidesurfaces of the first through the fifth lens elements, at least one ofthe surfaces has at least one inflection point. Therefore, it isfavorable for correcting aberrations at the off-axial region so as tofurther improve peripheral image quality.

When a sum of axial distances between each adjacent lens element of thephotographing lens assembly is ΣAT, a central thickness of the firstlens element is CT1, the following condition is satisfied:0<ΣAT/CT1<1.75. Therefore, it is favorable for efficiently utilizing thespace in the photographing lens assembly so as to meet the requirementof compact size; furthermore, it is also favorable for improving thelight convergence at the object side. Preferably, the followingcondition can also be satisfied: 0<ΣAT/CT1<1.65. More preferably, thefollowing condition can also be satisfied: 0<ΣAT/CT1<1.55.

When an axial distance between the image-side surface of the fifth lenselement and an image surface is BL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the fifth lens element is TD, the following condition is satisfied:0.65<BL/TD<2.60. Therefore, it is favorable to obtain a proper totaltrack length of the photographing lens assembly for better assemblingand a sufficient back focal length for accommodating additional opticalcomponents. Preferably, the following condition can also be satisfied:0.70<BL/TD<2.20.

When a maximum image height of the photographing lens assembly (half ofa diagonal length of an effective photosensitive area of an imagesensor) is ImgH, a focal length of the photographing lens assembly is f,the following condition is satisfied: 0.10<ImgH/f<0.50. Therefore, it isfavorable for obtaining a proper field of view featuring telephotoeffect, thus the photographing lens assembly is applicable to more kindsof applications. Preferably, the following condition can also besatisfied: 0.20<ImgH/f<0.35.

When a curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of the object-side surface of thefourth lens element is R7, the following condition can be satisfied:−3.0<R1/R7<1.30. Therefore, it is favorable for a balance between thesurface curvature of the first lens element and that of the fourth lenselement so as to further improve the telephoto effect of thephotographing lens assembly. Preferably, the following condition canalso be satisfied: −1.80<R1/R7<0.50.

When the curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of the object-side surface of thethird lens element is R5, the following condition can be satisfied:0.55<R1/R5<2.0. Therefore, it is favorable for converging light at theoff-axial region toward an optical axis, thus the lens elements can besturdily assembled in a compact space.

According to the present disclosure, the photographing lens assembly canfurther include an aperture atop. When an axial distance between theaperture stop and the image-side surface of the fifth lens element isSD, the axial distance between the object-side surface of the first lenselement and the image-side surface of the fifth lens element is TD, thefollowing condition can be satisfied: 0.60<SD/TD<0.94. Therefore, it isfavorable for controlling the imaging range and the incident angle ofthe light projecting onto the image surface so as to provide telephotophotographic functionality with high image brightness, simultaneously.

When the sum of axial distances between each adjacent lens element ofthe photographing lens assembly is ΣAT, a sum of central thicknesses ofthe lens elements of the photographing lens assembly is ΣCT, thefollowing condition can be satisfied: 0.05<ΣAT/ΣCT<0.50. Therefore, itis favorable for controlling the total track length of the photographinglens assembly and arranging sufficient space between each lens elementso as to prevent interference during the lens assembling process.

When the central thickness of the first lens element is CT1, a centralthickness of the second lens element is CT2, the following condition canbe satisfied: 1.70<CT1/CT2<6.50. Therefore, it is favorable forbalancing the thicknesses of the lens elements in order to efficientlyutilize the space in the photographing lens assembly.

When an entrance pupil diameter of the photographing lens assembly isEPD, the maximum image height of the photographing lens assembly isImgH, the following condition can be satisfied: 1.0<EPD/ImgH<1.80.Therefore, it is favorable for providing sufficient amount of incidentlight so as to increase the amount of light received per unit area ofthe image surface, thereby preventing vignetting.

When a curvature radius of the object-side surface of the second lenselement is R3, a curvature radius of the image-side surface of thesecond lens element is R4, the following condition can be satisfied:−2.20<(R3+R4)/(R3-R4)<0.50. Therefore, the shape of the second lenselement is favorable for a proper distribution of the marginal rays soas to reduce the effective radius of the image-side surface of thesecond lens element.

When an axial distance between the third lens element and the fourthlens element is T34, an axial distance between the fourth lens elementand the fifth lens element is T45, the following condition can besatisfied: 0<T34/T45<3.0. Therefore, the axial distance between thefourth lens element and the fifth lens element is sufficient foraccommodating the surface shapes of the fourth lens element and thefifth lens element, thus it is favorable for utilizing space efficientlywhile preventing interference between lens elements.

According to the present disclosure, the central thickness of the firstlens element can be the maximum among all central thicknesses of thefive lens elements of the photographing lens assembly. In detail, thecentral thickness of the first lens element can be larger than thecentral thicknesses of the second through the fifth lens elements.Therefore, it is favorable for increasing the structural strength at theobject side so that the photographing lens assembly has higherresistance against external force, thus the stable quality of sturdinesscan be obtained.

According to the present disclosure, at least three of the five lenselements of the photographing lens assembly each can have an Abbe numbersmaller than 30. In detail, each of the first through the fifth lenselements has an Abbe number, and at least three of the Abbe numbers canbe smaller than 30. Therefore, the refractive power of the lens elementshaving smaller Abbe numbers can be relatively stronger, which isfavorable for improving image quality.

According to the present disclosure, the photographing lens assembly canfurther include a reflector, and the reflector is favorable for theaxial direction rearrangement of the optical axis so as to obtain moreflexible lens design. The reflector can be, for example, a prism, whichis favorable for extending the optical axis while preventing the totaltrack length from overly long.

When a focal length of the first lens element is f1, a focal length ofthe third lens element is f3, the following condition can be satisfied:0<f3/f1<1.10. Therefore, it is favorable for a proper refractive powerdistribution of the photographing lens assembly to obtain sufficientback focal length, and for enabling more types of applications.

When the focal length of the photographing lens assembly is f, a focallength of the second lens element is f2, the following condition can besatisfied: −5.50<f/f2<−2.50. Therefore, it is favorable for furthercorrecting chromatic aberration of the photographing lens assembly andaberrations generated by the first lens element and the third lenselement.

When the axial distance between the image-side surface of the fifth lenselement and the image surface is BL, the maximum image height of thephotographing lens assembly is ImgH, the following condition can besatisfied: 1.50<BL/ImgH<3.0. Therefore, it is favorable for providingsufficient back focal length and various lens design possibilities ofthe photographing lens assembly.

When a maximum effective radius of the object-side surface of the firstlens element is Y11, a maximum effective radius of the image-sidesurface of the fifth lens element is Y52, the following condition can besatisfied: 0.95<Y11/Y52<1.30. Therefore, lens diameters of thephotographing lens assembly are proper for maintaining a compact sizethereof; furthermore, it is favorable for having a proper bearingsurface area between lens elements with consistent image quality.

When a vertical distance between a critical point on the image-sidesurface of the fourth lens element and the optical axis is Yc42, acentral thickness of the fourth lens element is CT4, the followingcondition can be satisfied: 0.01<Yc42/CT4<5.0. Therefore, it isfavorable for correcting field curvature and off-axial aberrations. Aschematic view of Yc42 according to the 3rd embodiment of the presentdisclosure is shown in FIG. 21, wherein there is a concave criticalpoint on the image-side surface of the fourth lens element. When theimage-side surface of the fourth lens element has only one criticalpoint, the vertical distance between the optical axis and the criticalpoint is Yc42. When the image-side surface of the fourth lens elementhas multiple critical points, the vertical distance between the opticalaxis and the critical point closest to the optical axis may be Yc42.

According to the present disclosure, at least three of the five lenselements of the photographing lens assembly each can have at least oneinflection point. In detail, among the first through the fifth lenselements, there can be at least three lens elements which have at leastone inflection point on either the object-side surface, the image-sidesurface or both of the two surfaces of one of the at least three lenselements. Therefore, it is favorable for correcting aberrations, such ascoma and astigmatism, at the off-axial region.

When the focal length of the photographing lens assembly is f, thecurvature radius of the object-side surface of the third lens element isR5, the following condition can be satisfied: 0<R5/f<0.90. Therefore,the functionality of the third lens element is enhanced to improve thesymmetry of the photographing lens assembly, thus it is favorable forcorrecting aberrations.

When the focal length of the photographing lens assembly is f, the focallength of the first lens element is f1, the focal length of the secondlens element is f2, the focal length of the third lens element is f3,the following condition can be satisfied: 5.0<(f/f1)−(f/f2)+(f/f3)<20.0.Therefore, it is favorable for balancing light convergence andcorrection of chromatic aberration, thereby enhancing telephoto effect.

When an axial distance between the object-side surface of the first lenselement and the image surface is TL, the focal length of thephotographing lens assembly is f, the following condition can besatisfied: 0.95<TL/f<1.20. Therefore, it is favorable for maintaining ashort total track length while satisfying the need of capturing highlydetailed images in telephoto photography.

When an Abbe number of the first lens element is V1, an Abbe number ofthe second lens element is V2, an Abbe number of the third lens elementis V3, an Abbe number of the fourth lens element is V4, an Abbe numberof the fifth lens element is V5, the following condition can besatisfied: 1.0<(V2+V3+V4+V5)/V1<2.50. Therefore, it is favorable forimproving aberration corrections while balancing chromatic aberration.

According to the present disclosure, the lens elements of thephotographing lens assembly can be made of glass or plastic material.When the lens elements are made of glass material, the refractive powerdistribution of the photographing lens assembly may be more flexible todesign. When the lens elements are made of plastic material,manufacturing costs can be effectively reduced. Furthermore, surfaces ofeach lens element can be arranged to be aspheric, since the asphericsurface of the lens element is easy to form a shape other than aspherical surface so as to have more controllable variables foreliminating aberrations thereof and to further decrease the requirednumber of the lens elements. Therefore, the total track length of thephotographing lens assembly can also be reduced.

According to the present disclosure, each of an object-side surface andan image-side surface of a lens element has a paraxial region and anoff-axial region. The paraxial region refers to the region of thesurface where light rays travel close to the optical axis, and theoff-axial region refers to the region of the surface away from theparaxial region. Particularly unless otherwise stated, when the lenselement has a convex surface, it indicates that the surface can beconvex in the paraxial region thereof; when the lens element has aconcave surface, it indicates that the surface can be concave in theparaxial region thereof. Moreover, when a region of refractive power orfocus of a lens element is not defined, it indicates that the region ofrefractive power or focus of the lens element can be in the paraxialregion thereof.

According to the present disclosure, an image surface of thephotographing lens assembly on a corresponding image sensor can be flator curved, particularly a concave curved surface facing towards theobject side of the photographing lens assembly.

According to the present disclosure, the photographing lens assembly caninclude at least one stop, such as an aperture stop, a glare stop or afield stop. Said glare stop or said field stop is allocated foreliminating the stray light and thereby improving image quality thereof.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between theimaged object and the first lens element can produce a telecentriceffect by providing a longer distance between an exit pupil and theimage surface, thereby improving the image-sensing efficiency of animage sensor (for example, CCD or CMOS). A middle stop disposed betweenthe first lens element and the image surface is favorable for enlargingthe view angle and thereby provides a wider field of view.

According to the above description of the present disclosure, thefollowing specific embodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 1A is a schematic view ofthe image capturing unit with another configuration of prism accordingto the 1st embodiment of the present disclosure. FIG. 1B is a schematicview of the image capturing unit with still another configuration ofprism according to the 1st embodiment of the present disclosure. FIG. 2shows, in order from left to right, spherical aberration curves,astigmatic field curves and a distortion curve of the image capturingunit according to the 1st embodiment. In FIG. 1 to FIG. 1B, the imagecapturing unit includes the photographing lens assembly (its referencenumeral is omitted) of the present disclosure and an image sensor 180.The photographing lens assembly includes, in order from an object sideto an image side, an object-side prism 191, an aperture stop 100, afirst lens element 110, a second lens element 120, a third lens element130, a fourth lens element 140, a fifth lens element 150, an image-sideprism 192, an IR-cut filter 160 and an image surface 170. Thephotographing lens assembly includes five lens elements (110-150) withno additional lens element disposed between the first lens element 110and the fifth lens element 150.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being convex in a paraxial region thereof. Thefirst lens element 110 is made of plastic material and has theobject-side surface 111 and the image-side surface 112 being bothaspheric. The image-side surface 112 of the first lens element 110 hasat least one inflection point.

The second lens element 120 with negative refractive power has anobject-side surface 121 being concave in a paraxial region thereof andan image-side surface 122 being concave in a paraxial region thereof.The second lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric. Each of the object-side surface 121 and the image-side surface122 of the second lens element 120 has at least one inflection point.

The third lens element 130 with positive refractive power has anobject-side surface 131 being convex in a paraxial region thereof and animage-side surface 132 being concave in a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric.

The fourth lens element 140 with negative refractive power has anobject-side surface 141 being concave in a paraxial region thereof andan image-side surface 142 being convex in a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric. The object-side surface 141 of the fourth lens element 140 hasat least one inflection point. The image-side surface 142 of the fourthlens element 140 has at least one concave shape in an off-axial regionthereof. The image-side surface 142 of the fourth lens element 140 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 150 with negative refractive power has anobject-side surface 151 being convex in a paraxial region thereof and animage-side surface 152 being concave in a paraxial region thereof. Thefifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric. The object-side surface 151 of the fifth lens element 150 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 152 of the fifth lens element 150 has at least oneconvex shape in an off-axial region thereof.

The IR-cut filter 160 is made of glass material and located between thefifth lens element 150 and the image surface 170, and will not affectthe focal length of the photographing lens assembly. The image sensor180 is disposed on or near the image surface 170 of the photographinglens assembly.

Both the object-side prism 191 and the image-side prism 192 are made ofglass material. In FIG. 1, a configuration of the object-side prism 191and the image-side prism 192 in the image capturing unit is forextending the optical axis. In FIG. 1A and FIG. 1B, a configuration ofthe object-side prism 191 and the image-side prism 192 in the imagecapturing unit is for changing the direction of the optical axis.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}\text{/}R} \right)\text{/}\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y\text{/}R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from an optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient, and in the embodiments, i may be,but is not limited to, 4, 6, 8, 10, 12, and 14.

In the photographing lens assembly of the image capturing unit accordingto the 1st embodiment, when a focal length of the photographing lensassembly is f, an f-number of the photographing lens assembly is Fno,and half of a maximum field of view of the photographing lens assemblyis HFOV, these parameters have the following values: f=8.70 millimeters(mm); Fno=2.80; and HFOV=16.0 degrees (deg.).

When an Abbe number of the first lens element 110 is V1, an Abbe numberof the second lens element 120 is V2, an Abbe number of the third lenselement 130 is V3, an Abbe number of the fourth lens element 140 is V4,an Abbe number of the fifth lens element 150 is V5, the followingcondition is satisfied: (V2+V3+V4+V5)/V1=2.14.

When a central thickness of the first lens element 110 is CT1, a centralthickness of the second lens element 120 is CT2, the following conditionis satisfied: CT1/CT2=2.63.

When an axial distance between the third lens element 130 and the fourthlens element 140 is T34, an axial distance between the fourth lenselement 140 and the fifth lens element 150 is T45, the followingcondition is satisfied: T34/T45=0.61.

When a sum of axial distances between each adjacent lens element of thephotographing lens assembly is ΣAT, the central thickness of the firstlens element 110 is CT1, the following condition is satisfied:ΣAT/CT1=0.65.

When the sum of axial distances between each adjacent lens element ofthe photographing lens assembly is ΣAT, a sum of central thicknesses ofthe lens elements of the photographing lens assembly is ΣCT, thefollowing condition is satisfied: ΣAT/ΣCT=0.23.

When a curvature radius of the object-side surface 111 of the first lenselement 110 is R1, a curvature radius of the object-side surface 131 ofthe third lens element 130 is R5, the following condition is satisfied:R1/R5=1.74.

When the curvature radius of the object-side surface 111 of the firstlens element 110 is R1, a curvature radius of the object-side surface141 of the fourth lens element 140 is R7, the following condition issatisfied: R1/R7=−0.57.

When the focal length of the photographing lens assembly is f, thecurvature radius of the object-side surface 131 of the third lenselement 130 is R5, the following condition is satisfied: R5/f=0.16.

When a curvature radius of the object-side surface 121 of the secondlens element 120 is R3, a curvature radius of the image-side surface 122of the second lens element 120 is R4, the following condition issatisfied: (R3+R4)/(R3-R4)=0.26.

When the focal length of the photographing lens assembly is f, a focallength of the second lens element 120 is f2, the following condition issatisfied: f/f2=−4.67.

When a focal length of the first lens element 110 is f1, a focal lengthof the third lens element 130 is f3, the following condition issatisfied: f3/f1=0.70.

When the focal length of the photographing lens assembly is f, the focallength of the first lens element 110 is f1, the focal length of thesecond lens element 120 is f2, the focal length of the third lenselement 130 is f3, the following condition is satisfied:(f/f1)−(f/f2)+(f/f3)=10.51.

When an axial distance between the image-side surface 152 of the fifthlens element 150 and the image surface 170 is BL, a maximum image heightof the photographing lens assembly is ImgH, the following condition issatisfied: BL/ImgH=2.38.

When the axial distance between the image-side surface 152 of the fifthlens element 150 and the image surface 170 is BL, an axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 152 of the fifth lens element 150 is TD, thefollowing condition is satisfied: BL/TD=1.51.

When an axial distance between the aperture stop 100 and the image-sidesurface 152 of the fifth lens element 150 is SD, the axial distancebetween the object-side surface 111 of the first lens element 110 andthe image-side surface 152 of the fifth lens element 150 is TD, thefollowing condition is satisfied: SD/TD=0.86.

When the focal length of the photographing lens assembly is f, themaximum image height of the photographing lens assembly is ImgH, thefollowing condition is satisfied: ImgH/f=0.29.

When an entrance pupil diameter of the photographing lens assembly isEPD, the maximum image height of the photographing lens assembly isImgH, the following condition is satisfied: EPD/ImgH=1.23.

When an axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 170 is TL, the focal length ofthe photographing lens assembly is f, the following condition issatisfied: TL/f=1.15.

When a maximum effective radius of the object-side surface 111 of thefirst lens element 110 is Y11, a maximum effective radius of theimage-side surface 152 of the fifth lens element 150 is Y52, thefollowing condition is satisfied: Y11/Y52=1.04.

When a vertical distance between a critical point on the image-sidesurface 142 of the fourth lens element 140 and an optical axis is Yc42,a central thickness of the fourth lens element 140 is CT4, the followingcondition is satisfied: Yc42/CT4=1.02.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 8.70 mm, Fno = 2.80, HFOV = 16.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Prism Plano 5.000 Glass 1.517 64.2 — 2 Plano0.728 3 Ape. Stop Plano −0.544  4 Lens 1 2.422 (ASP) 1.159 Plastic 1.54556.0 3.61 5 −8.705 (ASP) 0.173 6 Lens 2 −3.316 (ASP) 0.440 Plastic 1.63923.3 −1.86 7 1.952 (ASP) 0.026 8 Lens 3 1.393 (ASP) 0.870 Plastic 1.66020.4 2.54 9 6.250 (ASP) 0.209 10 Lens 4 −4.219 (ASP) 0.387 Plastic 1.66020.4 −10.27 11 −11.583 (ASP) 0.344 12 Lens 5 2.703 (ASP) 0.358 Plastic1.544 56.0 −421.78 13 2.547 (ASP) 0.300 14 Prism Plano 5.000 Glass 1.51764.2 — 15 Plano 0.200 16 IR-cut filter Plano 0.150 Glass 1.517 64.2 — 17Plano 0.351 18 Image Plano — Note: Reference wavelength is 587.6 nm(d-line). At least one of the object-side prism 191 and the image-sideprism 192 has a reflective surface. An effective radius of anobject-side surface of the object-side prism 191 (Surface 1) is 2.500mm.

TABLE 2 Aspheric Coefficients Surface # 4 5 6 7 8 k=   1.7277E−01  5.5236E+00   7.7056E−01 −6.2812E−01 −4.2910E−01 A4= −7.5993E−03  2.8237E−02   2.0711E−01   8.3297E−02 −1.2554E−01 A6=   5.7350E−03  5.5150E−02 −1.5041E−01 −9.5206E−02   5.4731E−02 A8= −4.6931E−03−1.0651E−01   3.6322E−02   2.6670E−02 −5.7145E−03 A10=   1.6438E−03  7.5159E−02   1.9783E−02   8.4069E−03 −3.4473E−02 A12= −2.1852E−04−2.4002E−02 −1.3318E−02 −4.4653E−03   2.6884E−02 A14= —   2.8900E−03  2.1240E−03 −5.0502E−05 −5.8470E−03 Surface # 9 10 11 12 13 k=  9.8749E+00   3.7447E+00 −9.0000E+01 −1.7624E+01 −1.9305E+01 A4=−3.5765E−02   1.6005E−01   1.2604E−01 −7.0369E−02 −4.1117E−02 A6=−2.9067E−02 −6.3326E−02   5.1947E−02   2.6102E−02 −4.1814E−02 A8=  1.3443E−01   6.6987E−02 −1.3381E−01 −5.4556E−02   4.2887E−02 A10=−1.6086E−01 −9.9266E−02   1.0893E−01   5.5006E−02 −2.4027E−02 A12=  8.3122E−02   6.5321E−02 −4.4459E−02 −2.6435E−02   6.8681E−03 A14=−1.3921E−02 −1.5050E−02   7.0162E−03   4.7166E−03 −9.0605E−04

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-18 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A14 represent the asphericcoefficients ranging from the 4th order to the 14th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the terms in thetables are the same as Table 1 and Table 2 of the 1st embodiment.Therefore, an explanation in this regard will not be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 3A is a schematic view ofthe image capturing unit with another configuration of prism accordingto the 2nd embodiment of the present disclosure. FIG. 3B is a schematicview of the image capturing unit with still another configuration ofprism according to the 2nd embodiment of the present disclosure. FIG. 4shows, in order from left to right, spherical aberration curves,astigmatic field curves and a distortion curve of the image capturingunit according to the 2nd embodiment. In FIG. 3 to FIG. 3B, the imagecapturing unit includes the photographing lens assembly (its referencenumeral is omitted) of the present disclosure and an image sensor 280.The photographing lens assembly includes, in order from an object sideto an image side, an object-side prism 291, a first lens element 210, anaperture stop 200, a second lens element 220, a third lens element 230,a fourth lens element 240, a fifth lens element 250, an image-side prism292, an IR-cut filter 260 and an image surface 270. The photographinglens assembly includes five lens elements (210-250) with no additionallens element disposed between the first lens element 210 and the fifthlens element 250.

The first lens element 210 with positive refractive power has anobject-side surface 211 being convex in a paraxial region thereof and animage-side surface 212 being convex in a paraxial region thereof. Thefirst lens element 210 is made of plastic material and has theobject-side surface 211 and the image-side surface 212 being bothaspheric. The image-side surface 212 of the first lens element 210 hasat least one inflection point.

The second lens element 220 with negative refractive power has anobject-side surface 221 being concave in a paraxial region thereof andan image-side surface 222 being concave in a paraxial region thereof.The second lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric. The object-side surface 221 of the second lens element 220 hasat least one inflection point.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being concave in a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric. The object-side surface 231 of the third lens element 230 hasat least one inflection point.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being convex in a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric. The object-side surface 241 of the fourth lens element 240 hasat least one inflection point. The image-side surface 242 of the fourthlens element 240 has at least one concave shape in an off-axial regionthereof. The image-side surface 242 of the fourth lens element 240 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being convex in a paraxial region thereof and animage-side surface 252 being concave in a paraxial region thereof. Thefifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric. The object-side surface 251 of the fifth lens element 250 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 252 of the fifth lens element 250 has at least oneconvex shape in an off-axial region thereof.

The IR-cut filter 260 is made of glass material and located between thefifth lens element 250 and the image surface 270, and will not affectthe focal length of the photographing lens assembly. The image sensor280 is disposed on or near the image surface 270 of the photographinglens assembly.

Both the object-side prism 291 and the image-side prism 292 are made ofglass material. In FIG. 3, a configuration of the object-side prism 291and the image-side prism 292 in the image capturing unit is forextending the optical axis. In FIG. 3A and FIG. 3B, a configuration ofthe object-side prism 291 and the image-side prism 292 in the imagecapturing unit is for changing the direction of the optical axis.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 9.15 mm, Fno = 2.80, HFOV = 15.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Prism Plano 5.000 Glass 1.559 40.4 — 2 Plano0.200 3 Lens 1 2.470 (ASP) 1.375 Plastic 1.545 56.0 4.04 4 −16.381 (ASP)0.096 5 Ape. Stop Plano 0.122 6 Lens 2 −3.784 (ASP) 0.350 Plastic 1.63923.3 −3.41 7 5.310 (ASP) 0.045 8 Lens 3 1.987 (ASP) 0.510 Plastic 1.66020.4 6.49 9 3.329 (ASP) 0.164 10 Lens 4 169.384 (ASP) 0.500 Plastic1.671 19.5 246.02 11 −6409.622 (ASP) 0.240 12 Lens 5 9.972 (ASP) 0.500Plastic 1.584 28.2 −11.31 13 3.901 (ASP) 0.400 14 Prism Plano 5.000Glass 1.559 40.4 — 15 Plano 0.350 16 IR-cut filter Plano 0.110 Glass1.517 64.2 — 17 Plano 0.350 18 Image Plano — Note: Reference wavelengthis 587.6 nm (d-line). At least one of the object-side prism 291 and theimage-side prism 292 has a reflective surface. An effective radius of anobject-side surface of the object-side prism 291 (Surface 1) is 2.500mm.

TABLE 4 Aspheric Coefficients Surface # 3 4 6 7 8 k=   2.3007E−01−1.2832E+01 −1.8587E+00 −4.9766E−01 −6.7275E−01 A4= −6.3911E−03  2.9921E−02   2.1187E−01   8.1243E−02 −1.3478E−01 A6=   6.1418E−03  5.5882E−02 −1.5308E−01 −9.7350E−02   5.0827E−02 A8= −4.8805E−03−1.0639E−01   3.4717E−02   2.2222E−02   1.7035E−03 A10=   1.6399E−03  7.4521E−02   1.9417E−02   9.9607E−03 −3.2226E−02 A12= −2.2872E−04−2.4436E−02 −1.3341E−02 −3.7761E−03   2.6761E−02 A14=   3.0842E−03  2.2774E−03   6.1958E−04 −5.7660E−03 Surface # 9 10 11 12 13 k=  4.8902E+00 −9.0000E+01 −9.0000E+01 −1.6271E+01 −1.9802E+01 A4=−2.7609E−02   1.3054E−01   1.1649E−01 −4.8428E−02 −3.2406E−02 A6=−3.1918E−02 −5.0160E−02   4.2535E−02   8.5686E−02   2.7881E−02 A8=  1.2981E−01   6.8676E−02 −1.2998E−01 −1.5516E−01 −4.7107E−02 A10=−1.5861E−01 −1.0117E−01   1.0900E−01   1.3863E−01   3.9528E−02 A12=  8.5551E−02   6.1810E−02 −4.4954E−02 −5.9815E−02 −1.6127E−02 A14=−1.6072E−02 −1.3613E−02   6.8919E−03   1.0260E−02   2.5976E−03

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 9.15 f/f2 −2.68 Fno 2.80 f3/f1 1.60 HFOV [deg.]15.0 (f/f1)−(f/f2) + (f/f3) 6.36 (V2 + V3 + V4 + V5)/V1 1.63 BL/ImgH2.47 CT1/CT2 3.93 BL/TD 1.59 T34/T45 0.68 SD/TD 0.62 ΣAT/CT1 0.49 ImgH/f0.28 ΣAT/ΣCT 0.21 EPD/ImgH 1.30 R1/R5 1.24 TL/f 1.11 R1/R7 0.01 Y11/Y521.20 R5/f 0.22 Yc42/CT4 0.03 (R3 + R4)/(R3−R4) −0.17 — —

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 380. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 300, a first lens element 310, a second lens element 320,a third lens element 330, a fourth lens element 340, a fifth lenselement 350, an IR-cut filter 360 and an image surface 370. Thephotographing lens assembly includes five lens elements (310-350) withno additional lens element disposed between the first lens element 310and the fifth lens element 350.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being convex in a paraxial region thereof. Thefirst lens element 310 is made of plastic material and has theobject-side surface 311 and the image-side surface 312 being bothaspheric. The image-side surface 312 of the first lens element 310 hasat least one inflection point.

The second lens element 320 with negative refractive power has anobject-side surface 321 being concave in a paraxial region thereof andan image-side surface 322 being concave in a paraxial region thereof.The second lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric. Both the object-side surface 321 and the image-side surface322 of the second lens element 320 have at least one inflection point.

The third lens element 330 with positive refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being concave in a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric. The object-side surface 331 of the third lens element 330 hasat least one inflection point.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being concave in a paraxial region thereof andan image-side surface 342 being convex in a paraxial region thereof. Thefourth lens element 340 is made of plastic material and has theobject-side surface 341 and the image-side surface 342 being bothaspheric. The object-side surface 341 of the fourth lens element 340 hasat least one inflection point. The image-side surface 342 of the fourthlens element 340 has at least one concave shape in an off-axial regionthereof. The image-side surface 342 of the fourth lens element 340 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being convex in a paraxial region thereof and animage-side surface 352 being concave in a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric. The object-side surface 351 of the fifth lens element 350 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 352 of the fifth lens element 350 has at least oneconvex shape in an off-axial region thereof.

The IR-cut filter 360 is made of glass material and located between thefifth lens element 350 and the image surface 370, and will not affectthe focal length of the photographing lens assembly. The image sensor380 is disposed on or near the image surface 370 of the photographinglens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 8.55 mm, Fno = 2.70, HFOV = 16.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.540  2 Lens 1 2.430 (ASP)1.344 Plastic 1.545 56.0 3.48 3 −6.906 (ASP) 0.162 4 Lens 2 −2.896 (ASP)0.351 Plastic 1.639 23.3 −1.93 5 2.239 (ASP) 0.076 6 Lens 3 1.669 (ASP)0.668 Plastic 1.660 20.4 3.46 7 5.199 (ASP) 0.172 8 Lens 4 −3.184 (ASP)0.438 Plastic 1.660 20.4 82.18 9 −3.172 (ASP) 0.196 10 Lens 5 2.641(ASP) 0.404 Plastic 1.544 56.0 −51.42 11 2.283 (ASP) 0.700 12 IR-cutfilter Plano 0.300 Glass 1.517 64.2 — 13 Plano 3.830 14 Image Plano —Note: Reference wavelength is 587.6 nm (d-line).

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 6 k=   1.4446E−01−2.5604E−01   9.2061E−01 −8.8366E−01 −3.8295E−01 A4= −7.9008E−03  3.0393E−02   2.0820E−01   7.9153E−02 −1.2070E−01 A6=   5.6835E−03  5.4333E−02 −1.5174E−01 −9.3916E−02   4.7096E−02 A8= −5.0124E−03−1.0759E−01   3.6837E−02   2.1895E−02 −4.1864E−03 A10=   1.8402E−03  7.5231E−02   1.9919E−02   9.0233E−03 −3.4208E−02 A12= −2.9723E−04−2.4053E−02 −1.3274E−02 −3.7631E−03   2.6753E−02 A14= —   2.8709E−03  2.0404E−03 −8.3323E−05 −5.6660E−03 Surface # 7 8 9 10 11 k=  1.1936E+01 −7.2888E−02   1.4405E+00 −1.7624E+01 −1.9305E+01 A4=−4.7603E−02   1.6359E−01   1.1773E−01 −8.5657E−02 −1.8888E−02 A6=−2.9713E−02 −5.8140E−02   5.2588E−02   3.9521E−02 −8.5908E−02 A8=  1.2909E−01   7.2076E−02 −1.3323E−01 −1.2038E−01   8.7693E−02 A10=−1.5822E−01 −1.0081E−01   1.1007E−01   1.3073E−01 −4.8790E−02 A12=  8.4398E−02   6.4385E−02 −4.2973E−02 −6.7454E−02   1.4388E−02 A14=−1.5933E−02 −1.4254E−02   7.2849E−03   1.3853E−02 −1.7609E−03

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 8.55 f/f2 −4.44 Fno 2.70 f3/f1 1.00 HFOV [deg.]16.0 (f/f1) − (f/f2) + (f/f3) 9.36 (V2 + V3 + V4 + V5)/V1 2.14 BL/ImgH1.92 CT1/CT2 3.83 BL/TD 1.27 T34/T45 0.88 SD/TD 0.86 ΣAT/CT1 0.45 ImgH/f0.29 ΣAT/ΣCT 0.19 EPD/ImgH 1.26 R1/R5 1.46 TL/f 1.01 R1/R7 −0.76 Y11/Y521.04 R5/f 0.20 Yc42/CT4 2.09 (R3 + R4)/(R3 − R4) 0.13 — —

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 480. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 400, a first lens element 410, a second lens element 420,a third lens element 430, a fourth lens element 440, a fifth lenselement 450, an IR-cut filter 460 and an image surface 470. Thephotographing lens assembly includes five lens elements (410-450) withno additional lens element disposed between the first lens element 410and the fifth lens element 450.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being convex in a paraxial region thereof. Thefirst lens element 410 is made of plastic material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric. The image-side surface 412 of the first lens element 410 hasat least one inflection point.

The second lens element 420 with negative refractive power has anobject-side surface 421 being concave in a paraxial region thereof andan image-side surface 422 being concave in a paraxial region thereof.The second lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric. Both the object-side surface 421 and the image-side surface422 of the second lens element 420 have at least one inflection point.

The third lens element 430 with positive refractive power has anobject-side surface 431 being convex in a paraxial region thereof and animage-side surface 432 being convex in a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric. Both the object-side surface 431 and the image-side surface432 of the third lens element 430 have at least one inflection point.

The fourth lens element 440 with negative refractive power has anobject-side surface 441 being concave in a paraxial region thereof andan image-side surface 442 being convex in a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric. The object-side surface 441 of the fourth lens element 440 hasat least one inflection point. The image-side surface 442 of the fourthlens element 440 has at least one concave shape in an off-axial regionthereof. The image-side surface 442 of the fourth lens element 440 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 450 with positive refractive power has anobject-side surface 451 being convex in a paraxial region thereof and animage-side surface 452 being concave in a paraxial region thereof. Thefifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric. The object-side surface 451 of the fifth lens element 450 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 452 of the fifth lens element 450 has at least oneconvex shape in an off-axial region thereof.

The IR-cut filter 460 is made of glass material and located between thefifth lens element 450 and the image surface 470, and will not affectthe focal length of the photographing lens assembly. The image sensor480 is disposed on or near the image surface 470 of the photographinglens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 8.55 mm, Fno = 2.80, HFOV = 16.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.513  2 Lens 1 2.409 (ASP)1.070 Plastic 1.545 56.1 3.50 3 −7.756 (ASP) 0.191 4 Lens 2 −2.995 (ASP)0.350 Plastic 1.639 23.3 −1.88 5 2.104 (ASP) 0.084 6 Lens 3 1.644 (ASP)0.785 Plastic 1.660 20.4 2.39 7 −31.112 (ASP) 0.162 8 Lens 4 −1.779(ASP) 0.500 Plastic 1.660 20.4 −6.86 9 −3.256 (ASP) 0.149 10 Lens 52.800 (ASP) 0.500 Plastic 1.544 56.0 89.56 11 2.784 (ASP) 4.300 12IR-cut filter Plano 0.210 Glass 1.517 64.2 — 13 Plano 0.418 14 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 8 Aspheric Coefficients Surface # 2 3 4 5 6 k=   1.2591E−01−2.8080E+00   9.6910E−01 −1.3401E+00 −3.3811E−01 A4= −8.2423E−03  3.1695E−02   2.0831E−01   7.3958E−02 −1.1491E−01 A6=   6.7924E−03  5.5186E−02 −1.5136E−01 −9.0460E−02   4.1347E−02 A8= −5.8777E−03−1.0820E−01   3.7095E−02   2.2936E−02 −3.9655E−03 A10=   2.1902E−03  7.5407E−02   1.9042E−02   1.0376E−02 −3.4758E−02 A12= −3.2943E−04−2.4094E−02 −1.3248E−02 −6.0129E−03   2.7014E−02 A14= —   2.9176E−03  2.1559E−03   4.5728E−04 −5.7006E−03 Surface # 7 8 9 10 11 k=−9.0000E+01 −7.7648E−01   4.7175E−01 −1.9896E+01 −2.2382E+01 A4=−5.6589E−02   1.7107E−01   1.1975E−01 −7.3974E−02 −3.0675E−02 A6=−2.1011E−02 −6.5390E−02   6.4772E−02   1.3379E−02 −5.2949E−02 A8=  1.2841E−01   7.3109E−02 −1.3807E−01 −4.4419E−02   6.6580E−02 A10=−1.5851E−01 −1.0005E−01   1.0666E−01   5.5908E−02 −4.3533E−02 A12=  8.4918E−02   6.4030E−02 −4.3274E−02 −3.4803E−02   1.4433E−02 A14=−1.5999E−02 −1.4388E−02   7.9497E−03   8.4764E−03 −1.9149E−03

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 8.55 f/f2 −4.54 Fno 2.80 f3/f1 0.68 HFOV [deg.]16.0 (f/f1) − (f/f2) + (f/f3) 10.56 (V2 + V3 + V4 + V5)/V1 2.14 BL/ImgH1.96 CT1/CT2 3.06 BL/TD 1.30 T34/T45 1.09 SD/TD 0.86 ΣAT/CT1 0.55 ImgH/f0.29 ΣAT/ΣCT 0.18 EPD/ImgH 1.21 R1/R5 1.47 TL/f 1.02 R1/R7 −1.35 Y11/Y521.01 R5/f 0.19 Yc42/CT4 1.65 (R3 + R4)/(R3 − R4) 0.17 — —

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 9A is a schematic view ofthe image capturing unit with another configuration of prism accordingto the 5th embodiment of the present disclosure. FIG. 10 shows, in orderfrom left to right, spherical aberration curves, astigmatic field curvesand a distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9 and FIG. 9A, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 580. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 500, a first lens element 510, a second lens element 520,a third lens element 530, a fourth lens element 540, a fifth lenselement 550, an image-side prism 592, an IR-cut filter 560 and an imagesurface 570. The photographing lens assembly includes five lens elements(510-550) with no additional lens element disposed between the firstlens element 510 and the fifth lens element 550.

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being convex in a paraxial region thereof. Thefirst lens element 510 is made of plastic material and has theobject-side surface 511 and the image-side surface 512 being bothaspheric. The image-side surface 512 of the first lens element 510 hasat least one inflection point.

The second lens element 520 with negative refractive power has anobject-side surface 521 being concave in a paraxial region thereof andan image-side surface 522 being convex in a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric. Both the object-side surface 521 and the image-side surface522 of the second lens element 520 have at least one inflection point.

The third lens element 530 with negative refractive power has anobject-side surface 531 being convex in a paraxial region thereof and animage-side surface 532 being concave in a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric. Both the object-side surface 531 and the image-side surface532 of the third lens element 530 have at least one inflection point.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being concave in a paraxial region thereof andan image-side surface 542 being convex in a paraxial region thereof. Thefourth lens element 540 is made of plastic material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric. The object-side surface 541 of the fourth lens element 540 hasat least one inflection point. The image-side surface 542 of the fourthlens element 540 has at least one concave shape in an off-axial regionthereof. The image-side surface 542 of the fourth lens element 540 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being concave in a paraxial region thereof andan image-side surface 552 being convex in a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric. The object-side surface 551 of the fifth lens element 550 hasat least one inflection point.

The IR-cut filter 560 is made of glass material and located between thefifth lens element 550 and the image surface 570, and will not affectthe focal length of the photographing lens assembly. The image sensor580 is disposed on or near the image surface 570 of the photographinglens assembly.

The image-side prism 592 is made of glass material. In FIG. 9, aconfiguration of the image-side prism 592 in the image capturing unit isfor extending the optical axis. In FIG. 9A, a configuration of theimage-side prism 592 in the image capturing unit is for changing thedirection of the optical axis.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 8.81 mm, Fno = 2.82, HFOV = 13.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.655  2 Lens 1 2.114 (ASP)1.384 Plastic 1.545 56.1  3.76 3 −49.725 (ASP) 0.241 4 Lens 2 −2.899(ASP) 0.400 Plastic 1.639 23.3 −5.97 5 −12.733 (ASP) 0.249 6 Lens 33.247 (ASP) 0.390 Plastic 1.544 56.0 −13.73 7 2.167 (ASP) 0.217 8 Lens 4−8.258 (ASP) 0.500 Plastic 1.660 20.4 10.11 9 −3.780 (ASP) 0.486 10 Lens5 −4.626 (ASP) 0.400 Plastic 1.639 23.3 −11.13 11 −13.690 (ASP) 0.200 12Prism Plano 4.000 Glass 1.517 64.2 — 13 Plano 0.400 14 IR-cut filterPlano 0.210 Glass 1.517 64.2 — 15 Plano 0.491 16 Image Plano — Note:Reference wavelength is 587.6 nm (d-line). The image-side prism 592 hasa reflective surface. An effective radius of an image-side surface ofthe image-side prism 592 (Surface 13) is 2.000 mm.

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 6 k=   0.0000E+00  0.0000E+00   0.0000E+00   0.0000E+00   0.0000E+00 A4= −2.8238E−03  7.5348E−03   2.4225E−01   3.3905E−01   4.4463E−02 A6=   6.9578E−04  1.1869E−02 −2.0420E−01 −3.1857E−01 −2.8814E−01 A8= −4.5453E−04−3.2647E−02   8.3610E−02   1.5638E−01   2.3687E−01 A10=   2.0618E−05  2.0423E−02 −8.2469E−03 −2.9640E−02 −1.4546E−01 A12= −2.0054E−06−4.0623E−03 −2.1723E−03   5.2027E−05   7.7320E−02 A14= — — — —−1.7154E−02 Surface # 7 8 9 10 11 k=   0.0000E+00   0.0000E+00  0.0000E+00   0.0000E+00   0.0000E+00 A4= −5.3510E−02   1.1535E−01  6.2763E−02 −1.0020E−01 −8.6628E−02 A6= −1.0991E−01 −1.8694E−02  1.6831E−02   1.6433E−02   3.0927E−02 A8=   2.2055E−03 −6.3320E−03−2.0014E−03   1.0384E−02 −1.6455E−02 A10=   9.6551E−02   9.1838E−03  3.4418E−02 −2.0554E−02   7.6343E−03 A12= −7.3826E−02 −7.7795E−03−3.4516E−02   1.5956E−02 −2.1476E−03 A14=   2.2575E−02   2.5949E−03  8.6862E−03 −3.4514E−03   2.8927E−04

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 8.81 f/f2 −1.48 Fno 2.82 f3/f1 −3.66 HFOV [deg.]13.9 (f/f1) − (f/f2) + (f/f3) 3.18 (V2 + V3 + V4 + V5)/V1 2.19 BL/ImgH2.41 CT1/CT2 3.46 BL/TD 1.24 T34/T45 0.45 SD/TD 0.85 ΣAT/CT1 0.86 ImgH/f0.25 ΣAT/ΣCT 0.39 EPD/ImgH 1.42 R1/R5 0.65 TL/f 1.09 R1/R7 −0.26 Y11/Y521.12 R5/f 0.37 Yc42/CT4 3.65 (R3 + R4)/(R3 − R4) −1.59 — —

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 11A is a schematic viewof the image capturing unit with another configuration of prismaccording to the 6th embodiment of the present disclosure. FIG. 11B is aschematic view of the image capturing unit with still anotherconfiguration of prism according to the 6th embodiment of the presentdisclosure. FIG. 12 shows, in order from left to right, sphericalaberration curves, astigmatic field curves and a distortion curve of theimage capturing unit according to the 6th embodiment. In FIG. 11 to FIG.11B, the image capturing unit includes the photographing lens assembly(its reference numeral is omitted) of the present disclosure and animage sensor 680. The photographing lens assembly includes, in orderfrom an object side to an image side, an object-side prism 691, anaperture stop 600, a first lens element 610, a second lens element 620,a third lens element 630, a fourth lens element 640, a fifth lenselement 650, an image-side prism 692, an IR-cut filter 660 and an imagesurface 670. The photographing lens assembly includes five lens elements(610-650) with no additional lens element disposed between the firstlens element 610 and the fifth lens element 650.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex in a paraxial region thereof and animage-side surface 612 being concave in a paraxial region thereof. Thefirst lens element 610 is made of plastic material and has theobject-side surface 611 and the image-side surface 612 being bothaspheric. The image-side surface 612 of the first lens element 610 hasat least one inflection point.

The second lens element 620 with negative refractive power has anobject-side surface 621 being concave in a paraxial region thereof andan image-side surface 622 being convex in a paraxial region thereof. Thesecond lens element 620 is made of plastic material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric. Both the object-side surface 621 and the image-side surface622 of the second lens element 620 have at least one inflection point.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being concave in a paraxial region thereof. Thethird lens element 630 is made of plastic material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric. Both the object-side surface 631 and the image-side surface632 of the third lens element 630 have at least one inflection point.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being concave in a paraxial region thereof andan image-side surface 642 being convex in a paraxial region thereof. Thefourth lens element 640 is made of plastic material and has theobject-side surface 641 and the image-side surface 642 being bothaspheric. The object-side surface 641 of the fourth lens element 640 hasat least one inflection point. The image-side surface 642 of the fourthlens element 640 has at least one concave shape in an off-axial regionthereof. The image-side surface 642 of the fourth lens element 640 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 650 with negative refractive power has anobject-side surface 651 being concave in a paraxial region thereof andan image-side surface 652 being convex in a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric.

The IR-cut filter 660 is made of glass material and located between thefifth lens element 650 and the image surface 670, and will not affectthe focal length of the photographing lens assembly. The image sensor680 is disposed on or near the image surface 670 of the photographinglens assembly.

Both the object-side prism 691 and the image-side prism 692 are made ofglass material. In FIG. 11, a configuration of the object-side prism 691and the image-side prism 692 in the image capturing unit is forextending the optical axis. In FIG. 11A and FIG. 11B, a configuration ofthe object-side prism 691 and the image-side prism 692 in the imagecapturing unit is for changing the direction of the optical axis.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 8.81 mm, Fno = 2.82, HFOV = 15.8 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Prism Plano 4.600 Glass 1.517 64.2 — 2 Plano1.017 3 Ape. Stop Plano −0.517  4 Lens 1 2.298 (ASP) 1.020 Plastic 1.54556.1 5.55 5 8.055 (ASP) 0.450 6 Lens 2 −4.096 (ASP) 0.400 Plastic 1.63923.3 −7.93 7 −22.191 (ASP) 0.067 8 Lens 3 1.646 (ASP) 0.473 Plastic1.544 56.0 16.11 9 1.822 (ASP) 0.316 10 Lens 4 −3.742 (ASP) 0.518Plastic 1.660 20.4 8.42 11 −2.360 (ASP) 0.406 12 Lens 5 −2.603 (ASP)0.400 Plastic 1.639 23.3 −6.55 13 −7.300 (ASP) 0.200 14 Prism Plano4.600 Glass 1.517 64.2 — 15 Plano 0.400 16 IR-cut filter Plano 0.210Glass 1.517 64.2 — 17 Plano 0.581 18 Image Plano — Note: Referencewavelength is 587.6 nm (d-line). At least one of the object-side prism691 and the image-side prism 692 has a reflective surface. An effectiveradius of an object-side surface of the object-side prism 691(Surface 1) is 2.300 mm.

TABLE 12 Aspheric Coefficients Surface # 4 5 6 7 8 k=   0.0000E+00  0.0000E+00   0.0000E+00   0.0000E+00   0.0000E+00 A4= −5.2966E−03−2.1319E−02   1.7553E−01   1.9749E−01 −1.1079E−01 A6= −1.5905E−03  2.1096E−03 −1.2360E−01 −7.7241E−02   3.3660E−02 A8=   2.1775E−04−7.9169E−03   5.0154E−02 −1.3346E−02 −6.7299E−02 A10= −6.6689E−04  4.7100E−03 −7.3018E−03   4.0681E−02   4.6094E−02 A12=   1.2767E−04−7.4930E−04 −5.1729E−05 −1.2358E−02 −1.0239E−02 A14= — — — —  2.7123E−04 Surface # 9 10 11 12 13 k=   0.0000E+00   0.0000E+00  0.0000E+00   0.0000E+00   0.0000E+00 A4= −1.3521E−01   1.0374E−01  9.0939E−02 −1.5524E−02 −3.2493E−02 A6=   8.3895E−02 −2.3483E−02−3.6896E−02 −4.6331E−02 −4.6276E−03 A8= −9.0967E−02   3.6751E−02  3.6651E−02   3.5008E−02   8.2684E−03 A10=   4.7582E−02 −4.3945E−02−3.1727E−02 −2.0768E−02 −3.0145E−03 A12= −1.2512E−02   2.5348E−02  1.9533E−02   1.0514E−02   8.0577E−04 A14=   2.2406E−03 −4.9892E−03−4.0623E−03 −1.6624E−03 −1.0171E−04

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 8.81 f/f2 −1.11 Fno 2.82 f3/f1 2.90 HFOV [deg.]15.8 (f/f1) − (f/f2) + (f/f3) 3.24 (V2 + V3 + V4 + V5)/V1 2.19 BL/ImgH2.38 CT1/CT2 2.55 BL/TD 1.48 T34/T45 0.78 SD/TD 0.87 ΣAT/CT1 1.21 ImgH/f0.29 ΣAT/ΣCT 0.44 EPD/ImgH 1.24 R1/R5 1.40 TL/f 1.14 R1/R7 −0.61 Y11/Y521.03 R5/f 0.19 Yc42/CT4 2.28 (R3 + R4)/(R3 − R4) −1.45 — —

7th Embodiment

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 13A is a schematic viewof the image capturing unit with another configuration of prismaccording to the 7th embodiment of the present disclosure. FIG. 14shows, in order from left to right, spherical aberration curves,astigmatic field curves and a distortion curve of the image capturingunit according to the 7th embodiment. In FIG. 13 and FIG. 13A, the imagecapturing unit includes the photographing lens assembly (its referencenumeral is omitted) of the present disclosure and an image sensor 780.The photographing lens assembly includes, in order from an object sideto an image side, an object-side prism 791, an aperture stop 700, afirst lens element 710, a second lens element 720, a third lens element730, a fourth lens element 740, a fifth lens element 750, an IR-cutfilter 760 and an image surface 770. The photographing lens assemblyincludes five lens elements (710-750) with no additional lens elementdisposed between the first lens element 710 and the fifth lens element750.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being convex in a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric. Both object-side surface 711 and the image-side surface 712 ofthe first lens element 710 have at least one inflection point.

The second lens element 720 with negative refractive power has anobject-side surface 721 being concave in a paraxial region thereof andan image-side surface 722 being concave in a paraxial region thereof.The second lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric. Both the object-side surface 721 and the image-side surface722 of the second lens element 720 have at least one inflection point.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being concave in a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric. The image-side surface 732 of the third lens element 730 hasat least one inflection point.

The fourth lens element 740 with negative refractive power has anobject-side surface 741 being concave in a paraxial region thereof andan image-side surface 742 being convex in a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric. The image-side surface 742 of the fourth lens element 740 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 742 of the fourth lens element 740 has at least oneconcave critical point in an off-axial region thereof.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being concave in a paraxial region thereof andan image-side surface 752 being convex in a paraxial region thereof. Thefifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric.

The IR-cut filter 760 is made of glass material and located between thefifth lens element 750 and the image surface 770, and will not affectthe focal length of the photographing lens assembly. The image sensor780 is disposed on or near the image surface 770 of the photographinglens assembly.

The object-side prism 791 is made of glass material. In FIG. 13, aconfiguration of the object-side prism 791 in the image capturing unitis for extending the optical axis. In FIG. 13A, a configuration of theobject-side prism 791 in the image capturing unit is for changing thedirection of the optical axis.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 8.82 mm, Fno = 2.82, HFOV = 15.7 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Prism Plano 4.300 Glass 1.883 40.8 — 2 Plano1.060 3 Ape. Stop Plano −0.560  4 Lens 1 2.134 (ASP) 1.079 Plastic 1.54556.1 3.35 5 −10.364 (ASP) 0.091 6 Lens 2 −3.040 (ASP) 0.372 Plastic1.639 23.3 −1.94 7 2.186 (ASP) 0.116 8 Lens 3 1.637 (ASP) 1.025 Plastic1.660 20.4 2.81 9 10.359 (ASP) 0.381 10 Lens 4 −1.796 (ASP) 0.350Plastic 1.639 23.3 −10.86 11 −2.607 (ASP) 0.346 12 Lens 5 −46.680 (ASP)0.499 Plastic 1.544 56.0 −112.05 13 −200.000 (ASP) 3.000 14 IR-cutfilter Plano 0.210 Glass 1.517 64.2 — 15 Plano 1.273 16 Image Plano —Note: Reference wavelength is 587.6 nm (d-line). The object-side prism791 has a reflective surface. An effective radius of an object-sidesurface of the object-side prism 791 (Surface 1) is 2.150 mm. Aneffective radius of the image-side surface 752 (Surface 13) is 1.480 mm.

TABLE 14 Aspheric Coefficients Surface # 4 5 6 7 8 k= −1.1539E−02  4.0906E+00 −1.6303E−01 −2.0382E−01 −1.4090E−01 A4= −6.2727E−03  5.1584E−02   2.0292E−01 −2.7941E−02 −1.8640E−01 A6= −2.2886E−03−2.5462E−02 −1.5440E−01   2.0421E−01   2.5653E−01 A8= −4.5969E−04−4.3351E−03   8.3841E−02 −3.5376E−01 −3.1616E−01 A10= −3.5255E−05  5.7551E−03 −3.1251E−02   3.1018E−01   2.2398E−01 A12= −9.1778E−05−1.6913E−03   6.5926E−03 −1.2965E−01 −7.3636E−02 A14= —   1.8589E−04−5.6079E−04   1.9736E−02   8.1864E−03 Surface # 9 10 11 12 13 k=  1.6628E+00 −1.1262E−01 −5.2455E−01   3.5282E+01 −9.0000E+01 A4=−3.9517E−02   1.5157E−01   1.2044E−01 −1.2267E−01 −1.0037E−01 A6=  2.6590E−02   1.9259E−02   5.1338E−02   5.1687E−02   3.1136E−02 A8=−6.4304E−02 −1.4437E−01 −1.0774E−01 −4.6477E−02 −1.4939E−02 A10=  4.1599E−02   1.4478E−01   1.1552E−01   4.0035E−02   3.7773E−03 A12=  4.7085E−03 −5.6801E−02 −6.2406E−02 −2.1902E−02 −4.6775E−04 A14=−5.7766E−03   5.1333E−03   1.3140E−02   5.8309E−03 −6.6419E−05

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 8.82 f/f2 −4.56 Fno 2.82 f3/f1 0.84 HFOV [deg.]15.7 (f/f1) − (f/f2) + (f/f3) 10.33 (V2 + V3 + V4 + V5)/V1 2.19 BL/ImgH1.78 CT1/CT2 2.90 BL/TD 1.05 T34/T45 1.10 SD/TD 0.87 ΣAT/CT1 0.87 ImgH/f0.29 ΣAT/ΣCT 0.28 EPD/ImgH 1.24 R1/R5 1.30 TL/f 0.99 R1/R7 −1.19 Y11/Y521.06 R5/f 0.19 Yc42/CT4 2.49 (R3 + R4)/(R3 − R4) 0.16 — —

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 880. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 800, a first lens element 810, a second lens element 820,a third lens element 830, a fourth lens element 840, a fifth lenselement 850, an IR-cut filter 860 and an image surface 870. Thephotographing lens assembly includes five lens elements (810-850) withno additional lens element disposed between the first lens element 810and the fifth lens element 850.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being convex in a paraxial region thereof. Thefirst lens element 810 is made of plastic material and has theobject-side surface 811 and the image-side surface 812 being bothaspheric. Both the object-side surface 811 and the image-side surface812 of the first lens element 810 have at least one inflection point.

The second lens element 820 with negative refractive power has anobject-side surface 821 being concave in a paraxial region thereof andan image-side surface 822 being concave in a paraxial region thereof.The second lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric. Both the object-side surface 821 and the image-side surface822 of the second lens element 820 have at least one inflection point.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex in a paraxial region thereof and animage-side surface 832 being concave in a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric. The image-side surface 832 of the third lens element 830 hasat least one inflection point.

The fourth lens element 840 with negative refractive power has anobject-side surface 841 being concave in a paraxial region thereof andan image-side surface 842 being convex in a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric. The image-side surface 842 of the fourth lens element 840 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being concave in a paraxial region thereof andan image-side surface 852 being convex in a paraxial region thereof. Thefifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric. The object-side surface 851 of the fifth lens element 850 hasat least one inflection point.

The IR-cut filter 860 is made of glass material and located between thefifth lens element 850 and the image surface 870, and will not affectthe focal length of the photographing lens assembly. The image sensor880 is disposed on or near the image surface 870 of the photographinglens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 8.83 mm, Fno = 2.82, HFOV = 15.7 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.555  2 Lens 1 2.136 (ASP)1.075 Plastic 1.545 56.1 3.38 3 −10.895 (ASP) 0.084 4 Lens 2 −3.033(ASP) 0.355 Plastic 1.639 23.3 −1.97 5 2.255 (ASP) 0.111 6 Lens 3 1.617(ASP) 0.898 Plastic 1.660 20.4 2.89 7 8.356 (ASP) 0.379 8 Lens 4 −1.817(ASP) 0.350 Plastic 1.639 23.3 −13.23 9 −2.488 (ASP) 0.344 10 Lens 5−28.665 (ASP) 0.514 Plastic 1.544 56.0 −61.57 11 −200.000 (ASP) 3.000 12IR-cut filter Plano 0.210 Glass 1.517 64.2 — 13 Plano 1.432 14 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line). An effectiveradius of the image-side surface 852 (Surface 11) is 1.480 mm.

TABLE 16 Aspheric Coefficients Surface # 2 3 4 5 6 k= −2.0528E−02  1.0434E+01 −2.3480E−01 −2.9718E−01 −1.8572E−01 A4= −8.7993E−03  1.5432E−02   1.9414E−01 −2.9079E−03 −1.9104E−01 A6= −4.6072E−05  6.2667E−02 −1.1315E−01   1.7896E−01   2.7912E−01 A8= −1.3934E−03−9.3342E−02   2.9973E−02 −3.7379E−01 −3.6288E−01 A10=   2.5550E−04  5.1031E−02   3.0548E−04   3.4535E−01   2.6191E−01 A12= −1.5166E−04−1.3238E−02 −2.2009E−03 −1.4606E−01 −8.7966E−02 A14=   1.3631E−03  3.9534E−04   2.2411E−02   1.0371E−02 Surface # 7 8 9 10 11 k=  8.7135E+00 −2.1694E−01 −5.7329E−01   2.2602E+01 −9.0000E+01 A4=−5.7164E−02   1.1527E−01   1.0059E−01 −1.1476E−01 −9.2745E−02 A6=  6.6398E−02   1.4243E−01   1.1973E−01   5.2411E−02   2.5361E−02 A8=−5.5562E−02 −2.4169E−01 −1.5515E−01 −4.7973E−02 −9.2753E−03 A10=−1.8819E−02   1.2417E−01   7.0816E−02   2.1339E−02 −2.6999E−03 A12=  4.7549E−02 −4.0644E−03 −2.1504E−03 −6.1352E−03   3.1453E−03 A14=−1.5576E−02 −1.1066E−02 −3.7241E−03   2.4853E−03 −7.7407E−04

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 8.83 f/f2 −4.47 Fno 2.82 f3/f1 0.85 HFOV [deg.]15.7 (f/f1) − (f/f2) + (f/f3) 10.15 (V2 + V3 + V4 + V5)/V1 2.19 BL/ImgH1.84 CT1/CT2 3.03 BL/TD 1.13 T34/T45 1.10 SD/TD 0.86 ΣAT/CT1 0.85 ImgH/f0.29 ΣAT/ΣCT 0.29 EPD/ImgH 1.24 R1/R5 1.32 TL/f 0.99 R1/R7 −1.18 Y11/Y521.06 R5/f 0.18 Yc42/CT4 2.56 (R3 + R4)/(R3 − R4) 0.15 − −

9th Embodiment

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure. FIG. 18 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 9thembodiment. In FIG. 17, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 980. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 900, a first lens element 910, a second lens element 920,a third lens element 930, a fourth lens element 940, a fifth lenselement 950, an IR-cut filter 960 and an image surface 970. Thephotographing lens assembly includes five lens elements (910-950) withno additional lens element disposed between the first lens element 910and the fifth lens element 950.

The first lens element 910 with positive refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being convex in a paraxial region thereof. Thefirst lens element 910 is made of plastic material and has theobject-side surface 911 and the image-side surface 912 being bothaspheric. The image-side surface 912 of the first lens element 910 hasat least one inflection point.

The second lens element 920 with negative refractive power has anobject-side surface 921 being concave in a paraxial region thereof andan image-side surface 922 being concave in a paraxial region thereof.The second lens element 920 is made of plastic material and has theobject-side surface 921 and the image-side surface 922 being bothaspheric. The object-side surface 921 of the second lens element 920 hasat least one inflection point.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex in a paraxial region thereof and animage-side surface 932 being concave in a paraxial region thereof. Thethird lens element 930 is made of plastic material and has theobject-side surface 931 and the image-side surface 932 being bothaspheric. The image-side surface 932 of the third lens element 930 hasat least one inflection point.

The fourth lens element 940 with negative refractive power has anobject-side surface 941 being concave in a paraxial region thereof andan image-side surface 942 being convex in a paraxial region thereof. Thefourth lens element 940 is made of plastic material and has theobject-side surface 941 and the image-side surface 942 being bothaspheric. The object-side surface 941 of the fourth lens element 940 hasat least one inflection point. The image-side surface 942 of the fourthlens element 940 has at least one concave shape in an off-axial regionthereof. The image-side surface 942 of the fourth lens element 940 hasat least one concave critical point in an off-axial region thereof.

The fifth lens element 950 with positive refractive power has anobject-side surface 951 being convex in a paraxial region thereof and animage-side surface 952 being concave in a paraxial region thereof. Thefifth lens element 950 is made of plastic material and has theobject-side surface 951 and the image-side surface 952 being bothaspheric. The object-side surface 951 of the fifth lens element 950 hasat least one concave shape in an off-axial region thereof. Theimage-side surface 952 of the fifth lens element 950 has at least oneconvex shape in an off-axial region thereof.

The IR-cut filter 960 is made of glass material and located between thefifth lens element 950 and the image surface 970, and will not affectthe focal length of the photographing lens assembly. The image sensor980 is disposed on or near the image surface 970 of the photographinglens assembly.

The detailed optical data of the 9th embodiment are shown in Table 17and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th Embodiment f = 8.60 mm, Fno = 2.80, HFOV = 16.1 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. Stop Plano −0.588  2 Lens 1 2.173 (ASP)0.927 Plastic 1.545 56.1 3.62 3 −18.361 (ASP) 0.200 4 Lens 2 −3.388(ASP) 0.350 Plastic 1.639 23.3 −2.14 5 2.378 (ASP) 0.163 6 Lens 3 1.853(ASP) 0.795 Plastic 1.660 20.4 2.92 7 40.696 (ASP) 0.243 8 Lens 4 −1.831(ASP) 0.389 Plastic 1.660 20.4 −8.21 9 −2.999 (ASP) 0.247 10 Lens 53.355 (ASP) 0.450 Plastic 1.544 56.0 50.15 11 3.645 (ASP) 4.300 12IR-cut filter Plano 0.210 Glass 1.517 64.2 — 13 Plano 0.460 14 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line). An effectiveradius of the image-side surface 952 (Surface 11) is 1.480 mm.

TABLE 18 Aspheric Coefficients Surface # 2 3 4 5 6 k=   1.1391E−01−9.0000E+01   5.4254E−01 −6.9401E−01 −1.9563E−01 A4= −9.2218E−03  3.3812E−02   2.1019E−01   7.8241E−02 −1.1439E−01 A6=   7.3160E−03  5.4551E−02 −1.5229E−01 −8.8424E−02   4.3733E−02 A8= −6.3045E−03−1.0866E−01   3.6706E−02   2.5318E−02 −7.6450E−04 A10=   2.2396E−03  7.5085E−02   1.8877E−02   1.1983E−02 −3.3624E−02 A12= −3.8429E−04−2.4110E−02 −1.3318E−02 −5.8691E−03   2.7842E−02 A14= —   2.9944E−03  2.2539E−03   9.7001E−05 −6.3927E−03 Surface # 7 8 9 10 11 k=  8.6918E+01 −6.3684E−01   2.5779E−01 −3.4170E+01 −4.9565E+01 A4=−6.1835E−02   1.7764E−01   1.2385E−01 −8.9311E−02 −4.3846E−02 A6=−2.1966E−02 −6.2465E−02   6.8054E−02   1.2593E−02 −5.7253E−02 A8=  1.2908E−01   6.9917E−02 −1.3705E−01 −4.3051E−02   6.8887E−02 A10=−1.5821E−01 −1.0146E−01   1.0545E−01   5.5447E−02 −4.3583E−02 A12=  8.4547E−02   6.3968E−02 −4.3710E−02 −3.3319E−02   1.4165E−02 A14=−1.6403E−02 −1.4556E−02   8.1961E−03   7.5188E−03 −1.9437E−03

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 8.60 f/f2 −4.02 Fno 2.80 f3/f1 0.81 HFOV [deg.]16.1 (f/f1) − (f/f2) + (f/f3) 9.35 (V2 + V3 + V4 + V5)/V1 2.14 BL/ImgH1.97 CT1/CT2 2.65 BL/TD 1.32 T34/T45 0.98 SD/TD 0.84 ΣAT/CT1 0.92 ImgH/f0.29 ΣAT/ΣCT 0.29 EPD/ImgH 1.22 R1/R5 1.17 TL/f 1.02 R1/R7 −1.19 Y11/Y521.04 R5/f 0.22 Yc42/CT4 2.16 (R3 + R4)/(R3 − R4) 0.18 − −

10th Embodiment

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure. FIG. 20 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 10thembodiment. In FIG. 19, the image capturing unit includes thephotographing lens assembly (its reference numeral is omitted) of thepresent disclosure and an image sensor 1080. The photographing lensassembly includes, in order from an object side to an image side, anaperture stop 1000, a first lens element 1010, a second lens element1020, a third lens element 1030, a fourth lens element 1040, a fifthlens element 1050, an IR-cut filter 1060 and an image surface 1070. Thephotographing lens assembly includes five lens elements (1010-1050) withno additional lens element disposed between the first lens element 1010and the fifth lens element 1050.

The first lens element 1010 with positive refractive power has anobject-side surface 1011 being convex in a paraxial region thereof andan image-side surface 1012 being concave in a paraxial region thereof.The first lens element 1010 is made of plastic material and has theobject-side surface 1011 and the image-side surface 1012 being bothaspheric. The image-side surface 1012 of the first lens element 1010 hasat least one inflection point.

The second lens element 1020 with negative refractive power has anobject-side surface 1021 being concave in a paraxial region thereof andan image-side surface 1022 being convex in a paraxial region thereof.The second lens element 1020 is made of plastic material and has theobject-side surface 1021 and the image-side surface 1022 being bothaspheric. The object-side surface 1021 of the second lens element 1020has at least one inflection point.

The third lens element 1030 with positive refractive power has anobject-side surface 1031 being convex in a paraxial region thereof andan image-side surface 1032 being concave in a paraxial region thereof.The third lens element 1030 is made of plastic material and has theobject-side surface 1031 and the image-side surface 1032 being bothaspheric. The image-side surface 1032 of the third lens element 1030 hasat least one inflection point.

The fourth lens element 1040 with positive refractive power has anobject-side surface 1041 being concave in a paraxial region thereof andan image-side surface 1042 being convex in a paraxial region thereof.The fourth lens element 1040 is made of plastic material and has theobject-side surface 1041 and the image-side surface 1042 being bothaspheric. The object-side surface 1041 of the fourth lens element 1040has at least one inflection point. The image-side surface 1042 of thefourth lens element 1040 has at least one concave shape in an off-axialregion thereof.

The fifth lens element 1050 with negative refractive power has anobject-side surface 1051 being concave in a paraxial region thereof andan image-side surface 1052 being concave in a paraxial region thereof.The fifth lens element 1050 is made of plastic material and has theobject-side surface 1051 and the image-side surface 1052 being bothaspheric. Both the object-side surface 1051 and the image-side surface1052 of the fifth lens element 1050 have at least one inflection point.The image-side surface 1052 of the fifth lens element 1050 has at leastone convex shape in an off-axial region thereof.

The IR-cut filter 1060 is made of glass material and located between thefifth lens element 1050 and the image surface 1070, and will not affectthe focal length of the photographing lens assembly. The image sensor1080 is disposed on or near the image surface 1070 of the photographinglens assembly.

The detailed optical data of the 10th embodiment are shown in Table 19and the aspheric surface data are shown in Table 20 below.

TABLE 19 10th Embodiment f = 10.01 mm, Fno = 2.80, HFOV = 14.5 deg.Focal Surface # Curvature Radius Thickness Material Index Abbe # Length0 Object Plano Infinity 1 Ape. Stop Plano −0.815  2 Lens 1 2.405 (ASP)1.903 Plastic 1.544 55.9 4.55 3 63.407 (ASP) 0.392 4 Lens 2 −2.187 (ASP)0.450 Plastic 1.660 20.4 −5.34 5 −6.232 (ASP) 0.167 6 Lens 3 8.814 (ASP)0.524 Plastic 1.660 20.4 89.43 7 10.117 (ASP) 0.296 8 Lens 4 −3.943(ASP) 0.625 Plastic 1.660 20.4 17.25 9 −3.113 (ASP) 0.385 10 Lens 5−24.800 (ASP) 0.402 Plastic 1.544 55.9 −17.46 11 15.467 (ASP) 0.500 12IR-cut filter Plano 0.210 Glass 1.517 64.2 — 13 Plano 3.903 14 ImagePlano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 20 Aspheric Coefficients Surface # 2 3 4 5 6 k=   3.2931E−01−9.9000E+01 −1.5280E+01 −4.5131E+01   3.1079E+01 A4= −3.3078E−03  2.8751E−02   1.1172E−01   3.2805E−01   6.8893E−02 A6=   3.9220E−04−7.0779E−03 −1.1320E−01 −3.8787E−01 −1.8128E−01 A8= −5.7668E−04−2.5533E−03   5.0277E−02   2.7257E−01   1.4620E−01 A10=   1.6076E−04  1.9400E−03 −8.2251E−03 −1.3186E−01 −7.7637E−02 A12= −2.6087E−05−4.5204E−05 −1.0095E−04   4.8364E−02   3.2177E−02 A14= — — — −8.6999E−03−5.9694E−03 Surface # 7 8 9 10 11 k=   1.7379E+01 −7.7210E+00−2.7995E+00   8.9439E+01   7.5141E+01 A4= −3.0538E−02   6.3352E−02  3.9864E−02 −1.0075E−01 −1.0859E−01 A6= −2.7964E−02 −1.1809E−01−8.7797E−02 −5.0250E−02   2.1072E−02 A8=   6.4881E−02   2.0898E−01  1.4042E−01   1.1484E−01   8.5198E−03 A10= −4.2528E−02 −1.7572E−01−1.0773E−01 −9.0116E−02 −1.1484E−02 A12=   1.0035E−02   6.8465E−02  3.8697E−02   3.0823E−02   4.0352E−03 A14= — −1.0228E−02 −5.2074E−03−3.7347E−03 −4.9313E−04

In the 10th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 10th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 19 and Table 20as the following values and satisfy the following conditions:

10th Embodiment f [mm] 10.01 f/f2 −1.87 Fno 2.80 f3/f1 19.67 HFOV [deg.]14.5 (f/f1) − (f/f2) + (f/f3) 4.19 (V2 + V3 + V4 + V5)/V1 2.09 BL/ImgH1.76 CT1/CT2 4.23 BL/TD 0.90 T34/T45 0.77 SD/TD 0.84 ΣAT/CT1 0.65 ImgH/f0.26 ΣAT/ΣCT 0.32 EPD/ImgH 1.37 R1/R5 0.27 TL/f 0.97 R1/R7 −0.61 Y11/Y521.03 R5/f 0.88 Yc42/CT4 − (R3 + R4)/(R3 − R4) −2.08 − −

11th Embodiment

FIG. 22 is a perspective view of an image capturing unit according tothe 11th embodiment of the present disclosure. In this embodiment, animage capturing unit 10 is a camera module including a lens unit 11, adriving device 12, an image sensor 13 and a cable 14. The lens unit 11includes the photographing lens assembly disclosed in the firstembodiment, a barrel and a holder member (their reference numerals areomitted) for holding the photographing lens assembly. The external lightconverges into the lens unit 11 of the image capturing unit 10 togenerate an image, and the lens unit 11 along with the driving device 12is utilized for image focusing on the image sensor 13. Then, the imageis digitally transmitted to an electronic component by the cable 14.

The driving device 12 can have auto focusing functionality, anddifferent driving configurations can be through the use of voice coilmotors (VCM), micro electro-mechanical systems (MEMS), piezoelectricsystems, or shape memory alloy materials. The driving device 12 isfavorable for the lens unit 11 to obtain a better imaging position, sothat a clear image of the imaged object can be captured by the lens unit11 with different object distances. The image sensor 13 (for example,CCD or CMOS) can be featured with high photosensitivity and low noise,disposed on the image surface of the photographing lens assembly toprovide higher image quality.

There can be a dynamic sensing element 26, such as an accelerometer, agyroscope and a hall effect sensor, configured to work with the drivingdevice 12 (Please refer to FIG. 23), so that the driving device 12 canprovide optical image stabilization (01S). The driving device 12 workingwith the dynamic sensing element 26 is favorable for compensating forpan and tilt of the lens unit 11 to reduce blurring associated withmotion during exposure. In some cases, the driving device 12 can be canbe assisted by electronic image stabilization (EIS) with imageprocessing software, thereby improving image quality while in motion orlow-light condition.

12th Embodiment

FIG. 23 is a schematic view of an electronic device according to the12th embodiment of the present disclosure. FIG. 24 is a perspective viewof the electronic device in FIG. 23. FIG. 25 is another perspective viewof the electronic device in FIG. 23. In this embodiment, an electronicdevice 20 is a smart phone including the image capturing unit 10disclosed in the eleventh embodiment, a flash light module 21, a focusassist module 22, an image signal processor 23, an user interface 24, animage software processor 25 and a dynamic sensing element 26.

When a user interacts with the user interface 24 to capture images,light converges into the image capturing unit 10 to generate image, andthe flash light module 21 is activated for light supplement. The focusassist module 22 detects the object distance of the imaged object toachieve fast image auto focus. The image signal processor 23 isconfigured to optimize the captured image to improve image quality. Thelight beam emitted from focus assist module 22 can be either infraredlight or laser. The user interface 24 can be a touch screen or a shutterbutton. The user is able to interact with the user interface 24 and theimage software processor 25 having multiple functions to capture imagesand complete image processing.

The smart phone in this embodiment is only exemplary for showing theimage capturing unit 10 of the present disclosure installed in anelectronic device, and the present disclosure is not limited thereto.The image capturing unit 10 can be optionally applied to optical systemswith a movable focus. Furthermore, the photographing lens assembly ofthe image capturing unit 10 is featured with good capability inaberration corrections and high image quality, and can be applied to 3D(three-dimensional) image capturing applications, in products such asdigital cameras, mobile devices, digital tablets, wearable devices,smart televisions, multiple lens devices, network surveillance devices,motion sensing input devices, dashboard cameras, vehicle backup camerasand other electronic imaging devices.

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-20 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. A photographing lens assembly comprising fivelens elements, the five lens elements being, in order from an objectside to an image side: a first lens element, a second lens element, athird lens element, a fourth lens element, and a fifth lens element;wherein the first lens element with positive refractive power has anobject-side surface being convex in a paraxial region thereof and animage-side surface being concave in a paraxial region thereof, at leastone surface of the five lens elements of the photographing lens assemblyhas at least one inflection point, and a central thickness of the firstlens element is the maximum among all central thicknesses of the fivelens elements of the photographing lens assembly; wherein thephotographing lens assembly further comprises an aperture stop, amaximum image height of the photographing lens assembly is ImgH, a focallength of the photographing lens assembly is f, an axial distancebetween an image-side surface of the fifth lens element and an imagesurface is BL, an axial distance between the object-side surface of thefirst lens element and the image-side surface of the fifth lens elementis TD, an axial distance between the aperture stop and the image-sidesurface of the fifth lens element is SD, and the following conditionsare satisfied:0.10<ImgH/f<0.35;0.70<BL/TD<2.20; and0.60<SD/TD<0.94.
 2. The photographing lens assembly of claim 1, whereinthe second lens element has negative refractive power, and the fifthlens element has negative refractive power.
 3. The photographing lensassembly of claim 1, wherein the second lens element has an object-sidesurface being concave in a paraxial region thereof.
 4. The photographinglens assembly of claim 1, wherein the image-side surface of the fifthlens element is concave in a paraxial region thereof, and the image-sidesurface of the fifth lens element has at least one convex shape in anoff-axial region thereof.
 5. The photographing lens assembly of claim 1,wherein an entrance pupil diameter of the photographing lens assembly isEPD, the maximum image height of the photographing lens assembly isImgH, and the following condition is satisfied:1.0<EPD/ImgH<1.80.
 6. The photographing lens assembly of claim 1,wherein a vertical distance between a critical point on an image-sidesurface of the fourth lens element and an optical axis is Yc42, acentral thickness of the fourth lens element is CT4, and the followingcondition is satisfied:0.01<Yc42/CT4<5.0.
 7. The photographing lens assembly of claim 1,wherein the maximum image height of the photographing lens assembly isImgH, the focal length of the photographing lens assembly is f, and thefollowing condition is satisfied:0.10<ImgH/f≤0.29.
 8. The photographing lens assembly of claim 1, whereina maximum effective radius of the object-side surface of the first lenselement is Y11, a maximum effective radius of the image-side surface ofthe fifth lens element is Y52, the central thickness of the first lenselement is CT1, a central thickness of the second lens element is CT2,and the following conditions are satisfied:0.95<Y11/Y52<1.30; and1.70<CT1/CT2<6.50.
 9. The photographing lens assembly of claim 1,wherein the aperture stop is disposed on the object side of the secondlens element, a sum of axial distances between each adjacent lenselement of the photographing lens assembly is ΣAT, the central thicknessof the first lens element is CT1, and the following condition issatisfied:0<ΣAT/CT1<1.65.
 10. The photographing lens assembly of claim 1, whereineach of at least three of the five lens elements of the photographinglens assembly has at least one inflection point.
 11. The photographinglens assembly of claim 1, further comprising a reflector.
 12. Aphotographing lens assembly comprising five lens elements, the five lenselements being, in order from an object side to an image side: a firstlens element, a second lens element, a third lens element, a fourth lenselement, and a fifth lens element; wherein the first lens element havingpositive refractive power, at least one surface of the five lenselements of the photographing lens assembly has at least one inflectionpoint, a central thickness of the first lens element is the maximumamong all central thicknesses of the five lens elements of thephotographing lens assembly, each of at least three of the five lenselements of the photographing lens assembly has an Abbe number smallerthan 30, and an absolute value of a curvature radius of an object-sidesurface of the second lens element is larger than an absolute value of acurvature radius of an image-side surface of the second lens element;wherein a maximum image height of the photographing lens assembly isImgH, a focal length of the photographing lens assembly is f, an axialdistance between an image-side surface of the fifth lens element and animage surface is BL, an axial distance between an object-side surface ofthe first lens element and the image-side surface of the fifth lenselement is TD, and the following conditions are satisfied:0.10<ImgH/f<0.35; and0.65<BL/TD<2.60.
 13. The photographing lens assembly of claim 12,wherein the third lens element has positive refractive power.
 14. Thephotographing lens assembly of claim 12, wherein the fifth lens elementhas an object-side surface being convex in a paraxial region thereof,the image-side surface of the fifth lens element is concave in aparaxial region thereof, and the image-side surface of the fifth lenselement has at least one convex shape in an off-axial region thereof.15. The photographing lens assembly of claim 12, wherein a sum of axialdistances between each adjacent lens element of the photographing lensassembly is ΣAT, a sum of central thicknesses of the lens elements ofthe photographing lens assembly is ΣCT, and the following condition issatisfied:0.05<ΣAT/ΣCT<0.50.
 16. The photographing lens assembly of claim 12,wherein a curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of an object-side surface of the thirdlens element is R5, and the following condition is satisfied:0.55<R1/R5<2.0.
 17. The photographing lens assembly of claim 12, whereinan entrance pupil diameter of the photographing lens assembly is EPD,the maximum image height of the photographing lens assembly is ImgH, andthe following condition is satisfied:1.0<EPD/ImgH<1.80.
 18. The photographing lens assembly of claim 12,wherein a sum of axial distances between each adjacent lens element ofthe photographing lens assembly is ΣAT, the central thickness of thefirst lens element is CT1, and the following condition is satisfied:0<ΣAT/CT1<1.75.
 19. The photographing lens assembly of claim 12, whereinan Abbe number of the first lens element is V1, an Abbe number of thesecond lens element is V2, an Abbe number of the third lens element isV3, an Abbe number of the fourth lens element is V4, an Abbe number ofthe fifth lens element is V5, and the following condition is satisfied:1.0<(V2+V3+V4+V5)/V1<2.50.
 20. A photographing lens assembly comprisingfive lens elements, the five lens elements being, in order from anobject side to an image side: a first lens element, a second lenselement, a third lens element, a fourth lens element, and a fifth lenselement; wherein the first lens element has positive refractive power,the third lens element has an image-side surface being concave in aparaxial region thereof, at least one surface of the five lens elementsof the photographing lens assembly has at least one inflection point, acentral thickness of the first lens element is the maximum among allcentral thicknesses of the five lens elements of the photographing lensassembly, an absolute value of a curvature radius of an object-sidesurface of the second lens element is larger than an absolute value of acurvature radius of an image-side surface of the second lens element,and an absolute value of a curvature radius of an image-side surface ofthe fourth lens element is larger than an absolute value of a curvatureradius of an object-side surface of the third lens element; wherein amaximum image height of the photographing lens assembly is ImgH, a focallength of the photographing lens assembly is f, an axial distancebetween an image-side surface of the fifth lens element and an imagesurface is BL, an axial distance between an object-side surface of thefirst lens element and the image-side surface of the fifth lens elementis TD, and the following conditions are satisfied:0.10<ImgH/f<0.35; and0.65<BL/TD<2.60.
 21. The photographing lens assembly of claim 20,wherein the fifth lens element has an object-side surface with at leastone concave shape in an off-axial region thereof, and the image-sidesurface of the fifth lens element has at least one convex shape in anoff-axial region thereof.
 22. The photographing lens assembly of claim20, wherein the fifth lens element has an object-side surface beingconvex in a paraxial region thereof, the image-side surface of the fifthlens element is concave in a paraxial region thereof, and the image-sidesurface of the fifth lens element has at least one convex shape in anoff-axial region thereof.
 23. The photographing lens assembly of claim20, wherein an entrance pupil diameter of the photographing lensassembly is EPD, the maximum image height of the photographing lensassembly is ImgH, and the following condition is satisfied:1.0<EPD/ImgH<1.80.
 24. The photographing lens assembly of claim 20,wherein a curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of an object-side surface of thefourth lens element is R7, and the following condition is satisfied:−0.61≤R1/R7<0.50.
 25. The photographing lens assembly of claim 20,wherein the curvature radius of the object-side surface of the thirdlens element is R5, the focal length of the photographing lens assemblyis f, and the following condition is satisfied:0<R5/f<0.90.
 26. The photographing lens assembly of claim 20, furthercomprising an aperture stop, wherein a vertical distance between acritical point on the image-side surface of the fourth lens element andan optical axis is Yc42, a central thickness of the fourth lens elementis CT4, an axial distance between the aperture stop and the image-sidesurface of the fifth lens element is SD, the axial distance between theobject-side surface of the first lens element and the image-side surfaceof the fifth lens element is TD, and the following conditions aresatisfied:0.01<Yc42/CT4<5.0; and0.60<SD/TD<0.94.
 27. The photographing lens assembly of claim 20,wherein the curvature radius of the object-side surface of the secondlens element and the curvature radius of the image-side surface of thesecond lens element have the same sign, the axial distance between theimage-side surface of the fifth lens element and the image surface isBL, the maximum image height of the photographing lens assembly is ImgH,and the following condition is satisfied:1.50<BL/ImgH<3.0.
 28. The photographing lens assembly of claim 20,further comprising a reflector, wherein the reflector is a prism.
 29. Animage capturing unit, comprising: the photographing lens assembly ofclaim 20; an optical image stabilizer; and an image sensor, wherein theimage sensor is disposed on the image surface of the photographing lensassembly.
 30. An electronic device, comprising: the image capturing unitof claim
 29. 31. A photographing lens assembly comprising five lenselements, the five lens elements being, in order from an object side toan image side: a first lens element, a second lens element, a third lenselement, a fourth lens element, and a fifth lens element; wherein thefirst lens element has positive refractive power, the third lens elementhas an object-side surface being convex in a paraxial region thereof andan image-side surface being concave in a paraxial region thereof, atleast one surface of the five lens elements of the photographing lensassembly has at least one inflection point, a central thickness of thefirst lens element is the maximum among all central thicknesses of thefive lens elements of the photographing lens assembly, and an absolutevalue of a curvature radius of an object-side surface of the second lenselement is larger than an absolute value of a curvature radius of animage-side surface of the second lens element; wherein a maximum imageheight of the photographing lens assembly is ImgH, a focal length of thephotographing lens assembly is f, an axial distance between animage-side surface of the fifth lens element and an image surface is BL,an axial distance between an object-side surface of the first lenselement and the image-side surface of the fifth lens element is TD, andthe following conditions are satisfied:0.10<ImgH/f<0.35; and0.65<BL/TD≤1.59.
 32. The photographing lens assembly of claim 31,wherein the fifth lens element has an object-side surface being concavein a paraxial region thereof.
 33. The photographing lens assembly ofclaim 31, wherein the first lens element has an image-side surface beingconvex in a paraxial region thereof, the fourth lens element has anobject-side surface being concave in a paraxial region thereof and animage-side surface being convex in a paraxial region thereof.
 34. Thephotographing lens assembly of claim 31, wherein the image-side surfaceof the fifth lens element is concave in a paraxial region thereof, andthe image-side surface of the fifth lens element has at least one convexshape in an off-axial region thereof.
 35. The photographing lensassembly of claim 31, wherein the maximum image height of thephotographing lens assembly is ImgH, the focal length of thephotographing lens assembly is f, and the following condition issatisfied:0.10<ImgH/f≤0.29.
 36. The photographing lens assembly of claim 31,wherein a sum of axial distances between each adjacent lens element ofthe photographing lens assembly is ΣAT, the central thickness of thefirst lens element is CT1, and the following condition is satisfied:0<ΣAT/CT1<1.75.
 37. The photographing lens assembly of claim 31, whereinan axial distance between the third lens element and the fourth lenselement is larger than an axial distance between the second lens elementand the third lens element.
 38. The photographing lens assembly of claim31, wherein an axial distance between the third lens element and thefourth lens element is larger than an axial distance between the fourthlens element and the fifth lens element.